| Serie 1 |
| Santiago Loayza Diaz | Trebulco School | 4 | 11.74 | 1 q |
| Santiago Cabargas Rengifo | Craighouse School | 2 | 12.03 | 2 q |
| Gaspar Montes Rencoret | Santiago College | 5 | 12.36 | 6 q |
| Benjamín Mateo Reitze Simian | The Mackay School | 8 | 12.42 | 7 q |
| Vicente Alberto Meneses Arriagada | The Mackay School | 7 | 12.56 | 10 |
| Alvaro Castro Buendia | Santiago College | 6 | 14.14 | 26 |
| Francisco Smart Sepulveda | The Mayflower School | 1 | | |
| Benjamin Monje Romero | The Mayflower School | 3 | | |
| Serie 2 |
| Mauricio Alberto Montoya Vilches | Saint John's School - Concepción | 2 | 12.26 | 4 q |
| Diego Puentes Larraguibel | Santiago College | 5 | 12.55 | 9 |
| Agustín Jose De La Jara Vergara | Dunalastair - Peñalolén | 8 | 12.78 | 14 |
| Juan Cristobal Jobet Scheel | Saint John's School - Concepción | 1 | 12.83 | 15 |
| Lorenzo Andrés Espinoza Camaño | Dunalastair - Chicureo | 4 | 12.95 | 17 |
| Vicente Vega Zúñiga | Dunalastair - Chicureo | 3 | 13.09 | 21 |
| Bruno Müller Gómez | Dunalastair - Chicureo | 7 | 13.14 | 22 |
| Emilio Ignacio Díaz Cavalerie | The Wessex School - Concepción | 6 | 13.63 | 25 |
| Serie 3 |
| Pedro Pichara Haddad | Craighouse School | 3 | 12.12 | 3 q |
| Matías Silva Carrasco | Saint Gabriel's School | 5 | 12.29 | 5 q |
| Gerónimo Ramirez Vivado | Bradford School | 4 | 12.43 | 8 q |
| Vicente García Loyola | Trebulco School | 7 | 12.60 | 11 |
| Daniel Bar Usua | Craighouse School | 6 | 12.89 | 16 |
| Nicolas Dunay Born | Trebulco School | 8 | 14.73 | 27 |
| Renato Ignacio Machuca Barrera | The Wessex School - Concepción | 2 | | |
| Serie 4 |
| Alfonso Andrés Astudillo Alcalde | Bradford School | 2 | 12.71 | 12 |
| Diego Alfonso Ruiz Jara | Dunalastair - Peñalolén | 7 | 12.74 | 13 |
| Gabriel Gonzalez Marambio | Saint Gabriel's School | 8 | 12.95 | 18 |
| Matias Quiroga Martinez | Saint John's School - Concepción | 5 | 13.01 | 19 |
| Martin Antonio Lizama Quezada | The Mackay School | 3 | 13.09 | 20 |
| Jose Tomas Sandoval Meyer | Dunalastair - Peñalolén | 6 | 13.32 | 23 |
| Joaquín Matías Almeyda Aguayo | The Wessex School - Concepción | 4 | 13.42 | 24 |
